Just 1 percent of people can spot the squirrel in this impossible brainteaser

Even Snow White would struggle to find this sneaky woodland creature.

If you think you have laser-sharp vision and are unflappable under time pressure, we've got the perfect for you. Brainteasers like these are a great way to pass the time for when the little ones inevitably refuse to go out to play in the Autumn rain and cold. Plus, research suggests regularly solving puzzles can help boost your attention and concentration levels (although it may also cause family rows).

But, only the top one per cent of people can solve this - meaning you'll need to be a genius with 20/20 vision. If not, you might wanna book an appointment at Specsavers...

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The image above shows a busy woodlands bustling with animals. There's a wistful owl perched on a branch, and angry-looking moose on the ground, and an array of colourful birds (including one that appears to have got the job as a postman.

Hiding amongst the creature-filled woods is a squirrel, and you'll need to find him in less than 30 seconds to prove you're a genius. This puzzle is so tricky that 99 per cent of people who try it end up failing, according to reports. So, get your timers ready and keep your eyes peeled.

PS. We're not talking about the squirrel on the envelope, did you really think it would be that easy? You can zoom in on the picture but we're not giving away any clues for this. Giving up? Scroll down to the bottom of the article for the answer.

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If that woodland-themed puzzle was no match for a modern-day Albert Einstein like yourself, fear not, we've got another challenge that is bound to leave you scratching your head. Created by the Government Communications Headquarters (), this brainteaser might be classified as 'family-friendly' but that doesn't mean it's easy.

You'll need the savvy skillset of a top spy to solve this one. So, get you 007 thinking caps on and prepare to save the from evil. Are you ready? Let's see how quickly you can work out which of the following word or phrases is the odd one out. If you think you've cracked it, you can.

• Catwoman
• Deus Ex Machina
• Parishioner
• Pyromania
• Scuba

Click here for more. Or, check out these that could reveal a lot about your personality.

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